package com.dcy.facade;

/**
 * @Author：dcy
 * @Description:
 * @Date: 2021/1/22 10:30
 */
public class Projector {
    private static Projector projector = new Projector();

    private Projector() {

    }

    public static Projector getInstance() {
        return projector;
    }

    public void on() {
        System.out.println(" projector on");
    }

    public void off() {
        System.out.println(" projector off");
    }

    public void focus() {
        System.out.println(" popcorn is focus ");
    }
}
